Wire drawing machine



July 11, P w DILLON WIRE DRAWING M CHINE Filed Dec. 5, 1927 5Sheets-Sheet 1 Pal/Z WDt'Z 012 July 11, 1933. P. w. DILLON 1,917,219

WIRE DRAWING MACHINE Filed Dec. 5, 1927 :5 Sheets-Sheet 3 Paul WDz'ZZoniPatented July 11, 1933 UNITED STATES PATENT OFFICE PAUL W. DILLON, OESTERLING, ILLINOIS, ASSIGNOR 'IO NORTHWESTERN BARBWIlR-E 60., OFSTERLING, ILLINOIS, A CORPORATION OF ILLINOIS WIRE DRAWING MACHINEApplication filed. December 5, 1927. Serial No. 237,745.

This invention relates to a wire drawing machine and consists incertain'improvements for facilitating and improving the operationthereof and which improvements consist in means for automaticallythrowing out the clutch and stopping the machine if a link or loop isformedin the wire before it reaches the first die, in means for clampingthe wire. during the threading operation, in means for applying a brakewhen the clutch is thrown out, in means for driv ing the machine at therear end thereof whereby the power is reduced, and in the use of ahorizontal winding reel to facilitate and render less laborious theremoval of the drawn coil of wire. I

The invention comprises the novel structure and combination of partshereinafter described and more particularly pointed out anddefined inthe appended claim.

In the accompanying drawings which illustrate a preferred embodiment ofthis in- 'vention and in which similar reference numerals refer tosimilar features in the different views:

Figure 1 is a side elevational View of a wire drawing machine involvingthis invention.

Figure 2 is a top plan view of the machine,

Figure 3 is a sectional view taken upon the line III-III of Figure 2. p

Figure 4: is a sectional view taken upon the line IVIV of Figure 2.

Figure 5 is a detail View of a portion of the machine bench lookingdownwardly and illustrating the wire clamping means.

Figure 6 is a vertical elevational View of the structure shown in Figure5.

Figure 7 is an enlarged sectional view taken upon the line VII-VII ofFigure 4.

Figure 8 is an enlarged sectional view taken upon the line VIIIVIII ofFigure 3.

In referring to the drawings, there is illustrated a wire drawingmachine embodying the improvements involving this invention. In thedrawings (Figure 1), the numeral 1 represents the initial or firstdrawing die through which the wire is drawn by a drawing drum 2. Thesecond die is represented by thenumeral 3 through which the wire isdrawn by the second drawing drum 4;. The third drawing die 5 throughwhich the wire is drawn by the drawing drum 6 is located near the rearof the machine. From the fourth drawing die 7, the'drawn wire passesaround the storage reel which is horizontally arranged and which drawsthe wire through the fourth or last die. Above each drawing drum, thereis an overhead guide roll 9 over which the wire respectively passes fromeach 9 drum as is well known in the art.

In connection with the aforementioned drawing dies, one or more clamps10 may be used for clampmg the wire during the threading operation. Forexample, after thewire has been threaded through the die 3, it is woundaround-the drum 4- and the end inserted under the clamp 10 adjacent thedie 3, for

' ture 12 with the stud 13. Normally, the clamp acts merely as a keeperand the wire which is represented by the numeral 14; may be slipped 30thereunder without springing the clamp from its stud 13. V

It will further be noted that the winding reel 8 is horizontally mountedupon a horizontal driven shaft 15 by means of a hub or disk16. The reelwith a coil thereon can readily be removed in a horizontal directionwithout much efiort or labor and the same constitutes a vast improvementover the usual vertical reels that are commonly used. 90

The main driving shaft of the machine is indicated at 1.7 which isadapted to be clutched to a co-axially driven shaft 18 through a clutchconsisting of a clutch drum 19 and the usual movable cone member 20which is operated by the usual shipper'lever 21 secured upon a rod 22extending longitudinally of the machine and suitably journalled in theframe thereof. A number of arms 23 Y rigidly secured upon the clutch rod22 carry counterweights 2d at their outer ends for automaticallyrotating the rod 22 for releasing the clutch at predetermined times aswill later more fully appear.

The clutch rod 22 has also rigidly secured thereon a number of arms 25which extend upwardly and in the opposite direction to the arms ,3.These arms 25 carry a rod 26 upon their outer ends. The clutch may bethrown out by elevating the rod 26. As the rod 26 extends a considerabledistance lengthwise of the machine, it may be operated by an at tendantat different points along the machine, so that the machine can bequickly stopped.

The clutch actuating rod 26 is adapted to be held in depressed conditionby a latch 27 (Figures 3 and 8) pivoted to the frame as indicated at 28.This latch has a cut-away portion forming a shoulder 29 which engagesover one of the arms 25. A spring 30 suitably anchored at one end isconnected at its other end to the latch 27 and is normally effected forshifting the latch over the arm 25 for holding the same in depressedposition as shown in Figure 3. A wire rod or cable 31 is also connectedto the lower end of the latch 27. This cable extends in the opposite di-,rection to the spring 30 and is attached to the lower end of a lever 32pivoted intermediate its ends upon a prop 33 extending from the frame ofthe machine. A spring 34 yieldingly anchors the lower end of the leverto the frame. The upper end of the lever 32 is provided with a loop 35(Figure 2) through which the wire passes to the first die. This loop isshown in exaggerated form, but it will be understood that in use it issufficiently small to prevent kinks or loopsin the wire from aassintherethrou h with the result that the lever is actuated for exerting apull upon the cable or rod 31 for drawing the latch 27 from the arm 25whereby the counterweights 24 will automatically actuate the clutch rod22 for releasing the clutch and stopping the machine. When the clutch isthuswise released,jthe rod 26 will be elevated and will automaticallyapply a brake 36 upon the drum clutch 19. y

This brake 36 is in the form of a shoe pivoted at one end as indicatedat 37. The other end of the shoe is suitably connected with an arm 25 bymeans of a yielding connection 38 or the like. hen the rod 26 and arms25 swing downwardly, the brake is released but when the same swingupwardly, the brake is applied.

In these wire drawing machines, the greatest reduction occurs at thefirst die 1 and consequently a greater force is required to rotate thedrum 2 that draws the wire through the first drum. The second die doesnot effect such a. reduction. Consequently the drum 4 that draws thewire through the second die does not require as much force to rotate itas the first drum 2. However, the

second drum 4 must rotate faster than the first drum on account of theelongation of the wire, since the drums are of substantially equaldiameter. In like manner, the third drum requires less force to rotatethan the second drum, but it must rotate faster on account of theelongation of the :wire. In the past, it has generaly been the practiceto apply the power at the first drum that rotates the slowest and thatrequires the most power. A great deal of waste power occurred inapplying the power to the first drum. In order to avoid this waste ofpower, I have applied the power to the last .drum or winding reel andused reduction gearing to drive the slower rotating drums requiringgreater force. For the gearing acts as acompound lever between thesource of power and the drum that draws the wire through the first diewhich effects the greatest reduction. To

this end, the drive shaft 17 is located at the rear of the machine andis immediately 7 geared to the reel shaft 15 by sprocket gear ing 39.The shaft 15 is then geared by suitable sprocket gearing 40 to the reardrum shaft 4-1. Of this sprocket gearing the sprocket wheel 4:00 on theshaft ll will of course be slightly largerthan the sprocket wheel @025on the shaft 15 in order to decrease the speed of shaft 41. l l 1 Uponthe shaft 4C1 there is a sprocket wheel 42 smaller than the sprocketwheel 40a that is geared by means of a sprocket chain 43 to a sprocketwheel A larger than the sprocket wheel 42 and which sprocket wheel at issecured upon the second drum shaft 45 whereby said shaft will be drivenat a reduced rate of speed. Spaced from the sprocket wheel 44, there isa smallersprocket wheel L6 which is geared by a suitable sprocket chainl? to a larger sprocket wheel 48 upon the first drum shaft 4&9 forreducing the speed of said shaft.

. While the operation of the machine is obvious from the foregoingdescription, it

might be mentioned that when a wire is being drawn that contains a kink,such kink will engage the lever 32 and cause the upper end of said leverto be pulled r-earwardly thereby swinging the latch 27 from engagementwith the clutch actuating mechanism allowing the counterweights 24 todrop and rotate the clutch rod 22 for releasing the clutch. As thecounterweights 24L descend,the rod 26.

and arms 25 will be elevated andthrough 1 In a maclnne of the characterdescribed, a

inc

driven shaft having a clutch drum thereon, a driving shaft having aclutch member for engaging said drum, a shipper lever for engaging saidclutch member, a rod extending longitudinally of the machine andconnected to said shipper lever, a second rod extending parallel to thefirst rod, arms connecting said rods, a latch lever pivoted to saidmachine and having a shoulder for engaging one of sald arms, a springfor maintaining sald shoulder in engagement with said arm, a

brake for said clutch drum, a connection be tween said brake and one ofsaid arms,

scribed my name.

- PAUL W. DILLON.

